Jockey Wheels and Mechs

Hey Gang.
The 10-speed jockey wheels on my XT mech are looking a bit spikey. Do I stick with Shimano or should I look at Hope or others?
Also who is doing the best deals? If I'm being asked to pay £30 for a pair of jockey wheels, would it be better to go for a deal on the new SLX with clutch mech? Sorry to combine so many questions together but your thoughts would be appreciated.

Shimano SLX jockey wheels 7 Euro, and XT 14 Euro from the usual German shops. But reading between the lines you're just looking for an excuse to buy a clutch mech, so... they're not worth it - get a new mech!